fix core folder with php-cs-fixer for psr-2

core/API/ApiRenderer.php

core/API/CORSHandler.php

core/API/DataTableGenericFilter.php

core/API/DataTableManipulator.php

core/API/DataTableManipulator/ReportTotalsCalculator.php

core/API/DataTablePostProcessor.php

core/API/Inconsistencies.php

core/API/Proxy.php

core/API/Request.php

core/API/ResponseBuilder.php

core/Access.php

core/Application/Environment.php

core/Application/Kernel/EnvironmentValidator.php

core/Application/Kernel/GlobalSettingsProvider.php

core/Application/Kernel/PluginList.php

core/Archive.php

core/Archive/ArchiveInvalidator.php

core/Archive/ArchivePurger.php

core/Archive/DataCollection.php

core/Archive/DataTableFactory.php